MediaMonkey doesn't have a built-in alarm clock, however, you can use the
Windows scheduler to schedule MediaMonkey to startup and play whatever is
in the Now Playing list (if the Auto-DJ is enabled, MM will even update the Now
Playing list for you).
To do so, just set an alarm via Control Panel > Scheduled Tasks , and set the
following to startup:
C:/Program Files/MediaMonkey.exe /play
Windows 7 users should follow steps described in
http://windows.microsoft.com/en-us/windows7/Schedule-a-task
and as startup argument put: /play
NOTE: Some users reported that they needed to set task for "run only when user is logged in" to show scheduled tasks.